A bit of history about Canon and catadioptric (mirror) lenses
Canon patents 400mm F5.6 catadioptric 'mirror' lens: Digital Photography Review
Earth Shaker - #AstroFact COMPOUND TELESCOPES Compound or catadioptric telescopes are optical telescopes that combine both lenses and mirrors to form an image. Light enters its optical aperture and passes through a
18 Best Catadioptric Telescopes: Ranked Price-wise
Compound or Catadioptric
Galileo G102MD 1100 x 102mm Catadioptric Telescope w/Motor Drive : : Electronics
Catadioptric Telescopes: A Complete Guide - Conduct Science.
PDF] Para-catadioptric camera auto-calibration from epipolar geometry
Catadioptric Telescopes- Is It An Amazing Discovery? - Let's Talk Stars
Catadioptric Telescopes, Catadioptric - Telescopes - Optics-Trade
